Battery operated spinning tops with the arena,more funny,let you control the battle!!! SPECIFICATION:1.Hot selling products in gyro series2.The diameter of the top is 5cm,the size of the launcher is 10*6*14cm,The finger set:5.2*2.5*4cm Arena:42*36.5*5cm, the whole products: 42.5*37.5*6cm3.Certificated by EN71 test. Other products in this series: